Service manual

AL-2041 SIMULATION, TROUBLE CODES 10 - 24
5. Trouble codes
A. Trouble codes list
B. Details of trouble codes
Main
code
Sub
code
Details of trouble
E7 01 Image data error
06 Image data decode error
10 Shading trouble (Black correction)
11 Shading trouble (White correction)
16 Abnormal laser output
20 LSU trouble
F2 64 Toner supply abnormality
70 Improper cartridge
74 Toner cartridge CRUM error
F5 02 Copy lamp lighting abnormality
H2 00 Thermistor open
H3 00 Heat roller high temperature detection
H4 00 Heat roller low temperature detection
L1 00 Feeding is not completed within the specified time
after starting feeding. (The scan head locking switch
is locked)
L3 00 Scanner return trouble
L4 01 Main motor lock detection
31 Exhaust fan motor lock detection trouble
L6 10 Polygon motor lock detection
U2 00 EEPROM read/write error (Serial communication
error)
11 Counter check sum error (EEPROM)
Main
code
Sub
code
Details of trouble
E7 01 Content Image data error
Detail Communication error with the E-sort module
MCU PWB trouble
ASIC trouble
Check
and
remedy
Check if it occurs again when the power is
turned OFF and ON. If so, replace the PWB.
06 Content Image data decode error
Detail Image expansion error
Cause MCU PWB abnormality
USB cable trouble
Check
and
remedy
Replace the MCU PWB.
Replace the USB cable.
10 Content Shading trouble (Black correction)
Detail The CCD black scan level is abnormal when
the shading.
Cause Improper connection of the CCD unit flat
cable
CCD unit abnormality
MCU PWB abnormality
Check
and
remedy
Check connection of the CCD unit flat cable.
Check the CCD unit.
E7 11 Content Shading trouble (White correction)
Detail The CCD white scan level is abnormal when
the shading.
Cause Improper connection of the CCD unit flat
cable
Dirt on the mirror, the lens, and the reference
white plate
Copy lamp lighting abnormality
CCD unit abnormality
MCU PWB abnormality
(When occurred in the SPF scan position.)
Improper installation of the mirror unit
Check
and
remedy
Clean the mirror, lens, and the reference
white plate.
Check the light quantity and lighting status of
the copy lamp (SIM 05-03).
Check the MCU PWB.
16 Content Abnormal laser output
Detail When the laser output is stopped, HSYNC is
detected.
Cause Laser abnormality
MCU PWB abnormality.
Check
and
remedy
Check the laser emitting diode operation.
Replace the MCU PWB.
20 Content LSU trouble
Detail The BD signal from the LSU cannot be
detected in a certain cycle. (Always OFF or
always ON)
Cause LSU connector or LSU harness defect or
disconnection
Polygon motor rotation abnormality
Laser beams are not generated.
MCU PWB abnormality.
Check
and
remedy
Check connection of the LSU connector.
Execute SIM 61-03 to check the LSU
operations.
Check that the polygon motor rotates
normally.
Check that the laser emitting diode
generates laser beams.
Replace the LSU unit.
Replace the MCU PWB.
F2 64 Content Toner supply abnormality
Detail The maximum toner supply time is greatly
exceeded.
Cause CRUM chip trouble
Improper developing unit
Check
and
remedy
Replace the CRUM chip.
Replace the developing unit.
70 Content Improper cartridge
Detail The destination of the main unit differs from
that of the CRUM.
When the life cycle information is other than
Not Used (FFh).
Cause CRUM chip trouble
Improper developing unit
Check
and
remedy
Replace the CRUM chip.
Replace the developing unit.
Main
code
Sub
code
Details of trouble